Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of long-term debt

We have issued various senior notes, all of which rank equally with our existing and future senior unsecured indebtedness, which have semi-annual interest payments and no sinking fund requirements. Our Long-term Debt consisted of the following:

	December 31,
(Dollars in millions)	2017		2016
6.35% Senior Notes due 2017	—		89
6.00% Senior Notes due 2018	66		66
9.625% Senior Notes due 2019	488		489
5.125% Senior Notes due 2020	364		363
5.875% Exchangeable Senior Notes due 2021	1,170		1,147
7.75% Senior Notes due 2021	741		739
4.50% Senior Notes due 2022	643		642
8.25% Senior Notes due 2023	739		738
9.875% Senior Notes due 2024	780		528
6.50% Senior Notes due 2036	447		447
6.80% Senior Notes due 2037	255		255
7.00% Senior Notes due 2038	456		456
9.875% Senior Notes due 2039	245		245
6.75% Senior Notes due 2040	456		456
5.95% Senior Notes due 2042	368		368
Secured Term Loan due 2020	372		420
4.82% secured borrowing	—		5
Capital and Other Lease Obligations	86		120
Other	2		7
Total Senior Notes and Other Debt	7,678		7,580
Less: Amounts Due in One Year	137		177
Long-term Debt	$	7,541	$	7,403

Schedule of maturities of long-term debt

he accrued interest on our borrowings was $145 million and $127 million at December 31, 2017 and 2016, respectively. The following is a summary of scheduled Long-term Debt maturities by year (dollars in millions):

2018	$	137
2019	543
2020	643
2021	1,918
2022	651
Thereafter	3,786
	$	7,678